Machine for the manufacture of papers similar to dipped watermark papers



April 13 1926. 1,581,004

P. ERKENS MACHINE FOR THE MANUFACTURE OF PAPERS SIMILAR T0 DIEPED WATERMARK PAPERS Filed Oct. 4, 1923 in detail.

Patented Apr. 13, 1926.

UNITED STATES PATENT 0FFICE.

PAUL ERKENS, OF NIEDERAU, NEAR DUREN, GERMANY.

MACHINE FOR THE MANUFACTURE OF PAPERS SIMILAR T0 DIPPED WATERMARK ZPAIERS.

Application filed October 4, 1923. Serial No. 666,605.

To all whom it may concern! Be it known that I, PAUL ERKENS, manufacturer, citizen of the German Republic,

residing at Niederau, near Duren, Rhld,

Germany, have invented certain new and useful Improvements 1n Machines for the Manufacture of Papers Similar to Dipped- Watermark Papers, of which the following is a. specification? The invention relates to a machine for the manufacture of papers similar to dipped water-mark papers and consists in this that a Fourdrinier wire or a skeleton drum carrying the water-mark-types is arranged above the Fourdrinier wire of a normal paper-machine, in such a manner that the upper Fourdrinier wire or the skeleton drum and the normal F ourdrinierwire below are shaken in conformity at the point where they meet. A web of paper is formed on the upper Fourdrinier wire or the skeleton drum in the "usual manner and transferred to the normal Fourdrinier wire.

According to a particularly advantageous mode of carrying out the invention the upper Fourdrinierwire or the skeleton drum, carrying the water-mark-types is provided with a deckle strap or any other means for protecting the web thereon.

The most essential feature of the new machine for the manufacture of papers similar to dipped water-mark papersis the fact that the meeting reaches of the normal Fourdrinier wire and the upper Fourdrinier Wire, or the skeleton drum, move in the same direction while the pulp is fed to that reach of the upper wire or of the drum which is movin in opposite direction to thatof the normal Fourdrinier wire.

In the drawings I have shownby way of example one modepf carrying out the invention.

The frame 1 of the machine and the means for actuating the normal Fourdrinier wire B and for supporting it on its way through the machine from the breast roll C to the suction boxes 2, 2, the driving sheave 3 and back to said breast roll form no art of the present invention and so are no described At a short distance to the rear of the breast roll C, a frame-4 is arranged above the frame 1. D and E are skeleton drums rotatably carried in said frame, Avis a Fourdrinier wire placed on said drums, and F is wire A by means of the feed-table K, the water being drained off through the wire,

a pulley which imparts motion to the wire AP A roller at the rear of the breast roll C slightly raises the wire B so as to hold-it in contact with the drum D. The meeting reaches of the two wires A and B move in the same direction, that is, to the rear of the breast roll 0. Paper pulp is supplied to the upper wire A by the feedtable K in a direction opposite to the movement of the normal Fourdrinier wire B. A deckle strap 5 may be provided above the upper reach of the wire A. The upper Fourdrinier wire A receives the pulp, drains and 'felts it by a continuous to-and-fro shaking movement, and in the course of the advancing movement' finally transfers the paper-web on the wire B. The draining to which the paper-web is subjected on the wire A may be regulated at will and according tion box J. In operation the wires A and B- are shaken so as to move in conformity at the point G. The means by which this is effected are well known in the art and there fore are not shown and described.

In order to provide the paper-web with the water-marks, elevated and sunk types are provided on the wire A. Preferably the wire A consists of two parts one of which contains the water-marks, whilst the other serves as a protection for same. The .two parts are interwoven with each other to a degree suitable for the purpose inquestion.

The liquid paper-pulp is supplied to the and the fibres of the pulp having sufficient time to perfectly settle in thicker or thinner layers according'to the elevated or sunk per tions provided on the wire, so that the watermarks are reproduced with clear and sharp lines, showing eventhe most delicate shadows, so that the work is equal to the best hand-work. This is obtained particularly by that feature of my machine that the shaking-wire A copies exactly any and all movements of the pulp-vat, which is handled by the vat-man. @wing to this feature the machine according to the invention is particularly suitable for making bonds, banknotes, cashier-bills, shares and other similar papersof that kind, which principally must have an extraordinary strength and the same extensibility and tearing module both in the longitudinal direction and in the transverse 110 direction and which besides this on account of the water-mark cannot be falsified. Those requirements are fulfilled to perfection in the papermanufactured according to the before described process.

I wish it to be understood that I do not desire to be limited to the exact details of construction shown and described for obvious modifications will occur to a person skilled in the art.

What I claim as my invention is:

1. Machine for making water-mark paper comprising a frame, a Fourdrinier wire adapted to be shaken, means on said frame for moving and supporting said Fourdrinier wire on said frame, a second Fonrdrinier wire arranged above said first wire, provided with markings and adapted to be shaken in conformity with said first wire at the point where said wires meet, means for supplying pulp to said second wire and means for moving said second wire in the same direction as wire on said frame, a second Fourdrinier wire arranged above said first wire, provided with markings and adapted to be shaken in conformity with said first wire at the point where said Wires meet, means for supplying pulp to that reach of said second ring which is moving in opposite direction to said first wire and means for moving that second wire in the same direction as said first wire.

3. Machine for making water-mark paper comprising a frame, a F ourdrinier wire adapted to be shaken, means on said frame for moving and supporting said Fourdrinier wire on said frame, a skeleton drum arranged above said Fourdrinier wire, provided with markings and adapted to be shaken in conformity with said Fourdrinier wire at the point where said drum and said i wire meet, means for supplying pulp to said skeleton drum and means for rotating said skeleton drum so that its periphery moves in the same direction as said Fourdrinier wire where it is meeting said wire.

In testimony whereof I aiiix my signature;

PAUL ERKENS. 

